Printing-press.



PATBNTED APR. 26, 1904.

w. SCOTT.

PRINTING PRESS. APPLICATION TILED PEIBJI, 1901.

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No. 758,112. PATENTED APR. 26, 1904.

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PRINTING PRESS.

AP1LIOATION FILED FEB 11 1901.

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No. 758,112. I PATENTED APR. 26, 1904] W. SCOTT.

PRINTING PRESS.

APPLIOA'HOK FILED FEB. 11, 1901,

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No.75s,112.-

PATENTED APR.'26,1904=. W. soon.

PRINTING PRESS.

' APPLICATION FILED 313.11, 1901.

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-Patented April 26,1904.

WALTER SCOTT, OF PLAINFIELD, NEW JERSEY.

PRINTING-PRESS.

SPECIFIQATION fonning part of Letters Patent No. 758,112, dated April 26, 1904.

Application filed February 11, 1901. Serial No. Q6324. (N0 model.)

1'0 LZZ whom it may concern:

Be it known that I, VVAIlTER Sooner, a citizen of the United States, and a resident of Plainfield, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Printing-Presses, of which the following isa specification.

My invention relates generally to printingmachines, and more particularly to the ink: ing or other fluid distributing apparatus on same, and to other improvements and features of construction or arrangement, which will hereinafter be more particularly described.

My invention is embodied in the machine shown in the accompanying drawings, which illustrate a rotary printing-press constructed with a plate-cylinder for carrying forms of any suitable material. In machines of this character it is important to have the form-- inking rolls placed very closely together, so

as to take up as little room as possible around To this end the surface of the plate-cylinder. I construct the plate-cylinder with the usual large gear, corresponding in size to the said cylinder, and also with a gear of a'diameter somewhat smaller than the pitch-line of the said plate-cylinder and the main gear. By this means I am enabled to place the intermediate gears, transferring motion from the plate-cylinder through the usual steel rollers to the form-inking rollers, below the airial line between each two form-rolls, so that the gears will clear the shanks of the rolls and leave room for ad ustment, thereby accomplishing my ob ect, the train of gears being,

further, so constructed as to drive the form'- inking rolls at the same surface speed as the surface speed of the form on the plate-cylinder. I further construct the shaft ofthe platecylinder with a cam provided with a groove in which the rollersof two rock shafts or levers rest. These shafts or levers are provided with rollers at their other ends. which engage with spools on the ends of the steel rollers that drive the form-inking rolls, thus vibrating the said rolls in an endwise direction; but the elemeiits are so constructed and arranged that a movement in one direction only takes place while the inking-rolls are in contact with the form and continues until the inking-rolls pass off the form, the vibratory return movement taking place after the said inking-rolls have passed entirely off the form, thus preventing any destruction or wear of the design on the form; Above the form inking and distributing device is placed an ink-distributing cylinder supplied with ink from the fountain -roll by means of aductor-roll mounted on a rockshaft. of a cam-and-lever movement, which is adjustable so as to regulate the length of time it remains in contact with the fountain-roll. The ink-distrihutin g cylinder, which is fed by the ductor-roll, is driven by means of agear "meshing with the main gearing-0n the platecylinder, while it is vibrated bymeans of a rotating cam driven from a small gear attached to its shaft, which cam is vibrated by means of a stationary roller on the framework and has provided, as has also the shaft of the said cylinder, flanges or grooves which extend into each other, and this causes the cam and the cylinder to be vibrated in unison. In addition by this construction the number of vibrations given the distributing-cylinder will be less than the number of its revolutions, the proportion being variable by varying the size of the operating-gears in relation to each other. 1 I further construct the plate-cylinder with an additional set of form-rolls for the following purpose: When printing in relief UNITED STATES PATENT The ductor-roll is operated by means or otherwise, and especially when the paper v ha's'a surface which flakes by coming in contactwith the plate or form, parts of the said surface of the paper sometimes adhere to the printing-plate and are transferred to the forminki'ng rolls, so that theybecome coated with fiber or dust from. the paper and are not so effective in putting the ink on the form. By having them divided into two sets or by providing an additional set the form-inking rolls" proper will be greatly relieved from such etc-"f oumulation of fiber and will thereby do their work more effectively than if the dust or fiber is allowed to accumulate .on the said rolls. Moreover, the additional set of rolls can be cleaned at intervals to remove the accumulation and could be supplied from their fountain-roll by some other fluid, such asoil, to keep the rolls moist and take-up the dust, or

they could be supplied with a luminous ink before the other ink is put. on, or they might be used to supply a differently-colored ink; but as part of the surface of the platecylinder is not occupied by the form the remaining surface is usually utilized as an inkdistributing surface, and it is therefore necessary that the additional set of rolls must be kept out of contact with this inking-surface on the plate-cylinder. This is done automatically by means of a cam movement, or it may be done by hand, as more fully hereinafter described, and in this way prevents these rolls which have an accumulation of paper fiber from coming in contact with the inking-surface, thereby preventing the transference of the said paper fiber or dust to the form-inking rolls proper.

Proceeding now to themoredetailed description, I have embodied the invention in the construction shown in the accompanying drawings, which structure may of course be varied at will in the minor details to meet various contingencies.

Figure l is a side elevation of the plate-cylinder of a rotary printing-press with adjacent means embodying my invention. Fig. 1 is a detached view of the ductor-roll and adjacent elements. Fig. 2 is an end view of Fig. 1. Fig. 3 is aplan view. Fig. 4 is a sectional view of the cylinder and rolls, taken on the line :10 m of Fig. 2. Fig. 5 is a detail plan view of parts located on one side of the framework for varying the length of the dwell of the ductor-roll. Fig. 6 is a side view in detail, showing one position'of the CIUCiSOP-JOll. Fig. 7 is another detail view like Fig. 6, but'showing the parts in a different position. Fig. 8 is an end view looking in the direction of the arrrow on Fig. 7

In several instances parts have been omitted and broken away to illustrate the invention more clearly; but similar letters of reference indicate corresponding parts in the different views.

I shall describe a rotary printing-press, and especially the inking mechanism of same, and afterward point out the novel features in the claims.

Mounted in a framework O of a suitable construction are the impression-cylinder A and the plate-cylinder B in such a position as to take an impression on the sheets of paper as they are fed between them. On the upper side of the plate-cylinder are placed the form-inking rolls f, which supply ink to the form. These rolls are'in contact with and driven by the steel rolls 6, which are driven by the gears e, mounted on the ends of their shafts, which in turn mesh with the intermediate gears d, mounted below the axial line of and between the form-rolls f and which receive their motion from the gear a, mounted on the plate-cylinder and of a diameter somewhat smaller than the pitch-line of the said plate-cylinder. By this means the spaces 00- cupied by the form-inking rolls f are nearer together, which is of considerable advantage. In order, however, to compensate for the difference in surface speed between the platecylinder and the gear 0, carried by same, the gears e on the ends of the rolls Z) are made correspondingly smaller than the diameter of the latter, so that the form-inking rolls f, driven by contact by the rolls 7/,will have their surfaces running at the same surface speed as the surface speed of the form on the cylinder B.

On the end of the shaft B of the cylinder B is placed a side cam 9, provided with an annular groove 9 Mounted in the verticallyslanting bushings h are the rock shafts or levers it", provided at their lower ends each with an arm h, carrying a roll 71 and at their upper ends each with two arms 1'. The rockshaft h is caused to turn back and forth by the roll 5?, traveling in the groove-g imparting a vibratory motion in an endwise direc tion to the steel rolls 7) and the form-.rollsf through the instrumentality of the arms 6, extending into the spools j on the ends of the rolls-b. The construction and relative arrangement of the cam g and the arms 2', however, is such that the vibration or endwise motion of the rolls will not change in its direction while the form-rolls are on the form, thus preventing any wear or destruction of the design.

Mounted in the frame 0, by means of two studs K, are two semicircular arms K, one on each side of the machine. These arms have friction-rolls K at their lower ends, which come in contact with the two cams K which are'fastened on.the rock-shaft K which latter is operated by the hand-lever K. The arms K have raised portions K", which almost contact with the shanks on the formrolls f, the distance being varied, so that as the arms are raised from their normal position they will raise the form-rolls away from the form-cylinder in a radial direction, so that the rollers will be about equidistant from the form on the cylinder, and thus prevent the gears e on the rollers b from coming out of mesh with thegears 61, so that the rolls can be inked up before inking the form.

In the framework above the form inking and distributing apparatus is placed an ink distributing cylinder 5, provided with distributing-rolls 11 on its upper side. Cylinder b is supplied with ink by the ductor-roll Z, which receives its supply from the ink-fountain'roll a. This fountain-roll a is mounted in a convenient place near the cylinder Z) and is driven at a slow uniform speed by means of the gears 0, (Z, c, and f. The ductorroll Z is carried by two arms Z, one on each side of the press, which are fixed on the rock-shaft following manner: On the end of the shaft forms part of the lever q and which continusharp edge 25, which carries on one side the cam m in contact with the fountain-roll.

arm n, terminating in a surface having a On this rock-shaft b is also fastened an 1 friction-roll a, which is held up against the cam m on the shaftof the fountain-roll aby means of a spring 0, (shown in Fig. 3,) fastened to the lever 0 of the ro'ck-shafth and to the framework, the revolution of the cam m moving theductor-rolll between thefountain-roll a and the (:listributingcylinder 5. The length of time of dwell of the ductor-roll against the fountain'roll is regulated in the of the fountain-roll a and immediately adjacent to the cam'm is an eccentric .cam p. Above the fountain upon the upright c is placed a stud 0 which carries two levers g and r. The lever q is in contact with the cocentric cam 12, and the lever 1 comes in contact with the surface 1- on the arm n. On the lever r is placed an adjusting-screw s, the point of which bears on a projection s, which ously rests upon the eccentric cam 19. The roll a, being held continuously up against the cam 97?.- by the spring 0', follows the surface of same as it rotates, thereby rocking the shaft b and consequently the ductor-roll Z. If this means alone were used, the motion of the ductor-roll would always be the same and it would always remain a certain length of time in contact with the fountain-roll, thus transferring a constant amount of ink. As this is not desirable, the lever r and surface or stop it are provided, which by their cooperation prevent the ductor-roll from remaining the full length of time allowed by the This is accomplished by the cam 19 lifting the levers q and 7 up, thus bringing the latter into contact with the surface 6, and by adjusting the screw 8 the lever r is moved up or down with relation to the lever q, 'so that it will encounter the stop t sooner or later or not at all, as the case may be. By this means the ductor-roll may remain in contact with the fountain-roll a very short period of time or the full length of time allowed by the cam on, according to the adjustment of the lever r with relation to the surface or stop 2,, and in that way transfer more or less ink to the distributing-cylinder b, from whence the ink is transferred to the distributing and form-inking rolls by means of two rollers 2 placed on each side of the extension of the framework. The rotating cam p, shown on the shaft of the fountain-roll, may be mounted on another shaft or stud instead.

A vibrating motion is imparted to the cylinder b in the following manner: On' the framework Obetween the cylinders B and b is placed a stud f This stud carries a gear V, which meshes with the gear at on the cylinder Band with the gear a on the cylinder 6. On the opposite side of the press in the framework O, between the cylinders B and 5, is placed a stud 6 on which ismounted a rotating cam w, admitting of endwlse movement, having a gear 3 thereon, which is driven by the small gear a: on the end of the shaft of cylinder 6. On the frame O is bolted astationary bracket 2, carrying the roll 2, which runs in the groove w of the cam w, whereby the cam is vibrated on the stud e as it revolves. On the end of the cam w are placed two circular tongues a,

forming a groove (4 which coacts with the similarly-formed tongues and groove on the shaft of the cylinder 5, thus causing the cylinder b to vibrate endwise in unity with the rotation of the cam '41:, the 'number of vibrations of the cylinder b'bein'g, however, less than the number of its revolutions and may be varied by changing the proportions of the gears m and y.

On the lower side of the cylinder B are placed an additional set of rolls, consisting in this instance of three rolls S, similar in construction to the form-rolls f, which receive their supply of ink from the fountain D in a similar manner as the upper set of rolls. These form-rolls are mounted on the arms E, fastened to: the rock-shafts F. these rock-shafts F is mounted a gear Gr,which connects with the gear u on the cylinder B. This gear (3i in turn drives the gears H, which in turn drive the polished rolls S, which come in contact with and drive the form-rolls S. These steel rolls S are caused to vibrate by the cam g in the same manner and by the same mechanism as the rolls on the upper side of the cylinder Bl On the frame O below the arms E is placed a rock-shaft I, on which are mounted two arms I. On the end of these arms are placedasec- 0nd set of arms 1 which carry on their ends friction-rolls 1 coming in contact with the arms E. The second set of arms I are adjustable by adjusting-screws 1 so as to raise and lower the arms E to bring the form-rollers into proper relation with the cylinder B. It will be seen that by raising the lever I the arms E will be lowered, bringing the formrolls out of contact with the form. This operation is also performed automatically by the lever 1 and its friction-roll 1 coming in contact with the cam J on the shaft of the platecylinder, which is so adjusted that the formrolls do not contactwith the portion of the cylinder utilized as an ink-distributing surface. As the arms E swing from the center of the gear G it will be seen that the gearing is always in mesh and that the ink or other fluid will be distributed even while the rolls are not in contact with the form on the cylinder and that these rolls can be raised and lowered at any time desired during the rotation of the cylinder B.

Having thus described my invention, what On one of IIO I claim as new, and desire to secure by Letters Patent of the United States, is

1. In a printing-press, the combination of a plate-cylinder, aplurality of form-inking rolls arranged circumferentially of the same, a plurality of superposed rolls driving the forminking rolls by'contact, a circumferential gear carried by the plate-cylinder of a diameter somewhat less than the pitch-line of the said cylinder, a plurality of intermediate gears mounted below the axial line of the form-inking rolls and driven by the said circumferential gearat a slower surface speed than the plate-cylinder, a gear, mounted on the end of each of the superposed rolls, of a smaller diameter than the diameter of the said superposed rolls, meshing with the intermediate gears aforesaid and driving the superposed rolls and through them the form-inking rolls at the same surface speed as the plate-cylinder, substantially as described.

2. In a printing-press, the combination of a plate-cylinder, aplurality of form-inking rolls arranged circumferentially of same, a plurality of superposed rolls driving the forminking rolls by contact, a circumferential motion-transmission means carried within the pitch-line on the plate-cylinder, means for coacting therewith mounted below the axial line of the form-inking rolls and extending inside of the pitch-line of the said cylinder, and means, mounted on the ends of the superposed rolls, of a less diameter than the diameter of the said superposed rolls, for receiving motion from the coacting means, substantially as described.

3. In a printing-press, the combination of a plate-cylinder adapted to carry a form or plate from which impressions are to be made, a plurality of form-inking rolls arranged circumferentially of the cylinder, a plurality of superposed and lengthwise-vibrating rolls driving said form-inking rolls by contact, and means for moving the rolls lengthwise in one direction only while the form-inking rolls con tact with the form, substantially as described.

4. In a printing-press, the combination of a plate-cylinder adapted to carry a plate or form from which impressions are to be made, a plurality of form-inking rolls arranged circumferentially of the cylinder, a plurality of superposed and lengthwise-vibrating rolls driving said form-inking rolls by contact, a cam carried on the shaft of the plate-cylinder, a shaft mounted in the framework, a roller carried on the end of said shaft adapted to cooperate with the cam on the shaft of the platecylinder, two arms carried by the said shaft at its other end and at right angles to its axis, spools carried by the rolls aforesaid, and

means carried by the arms of the shaft for 00-- operating with the spools to Vibrate the rolls, the movement being in one direction only while the form-inking rolls contact with the form, substantially as described.

5. In a printing-press, the combination of a rock-shaft carrying a ductor-roll, an arm carried by said rock-shaft terminating in a contacting portion, a lever pivoted at one end, a second lever also pivoted at one-end and resting on a portion of the first-mentioned lever and terminating in a portion adapted to contact with the contacting portion of the arm on the rock-shaft, and means for regulating the distance of the two contacting portions with relation to each other by regulating the relative position of the levers, substantially as described.

6. In a printing-press, the combination of a rock-shaft carrying a ductor-roll, an arm carried by said rock-shaft terminating in a contacting portion, a fountain-roll having a rotary motion, alever pivoted at one end, a second lever also pivoted at one end and resting on a portion of the first-mentioned lever and terminating in a portion adapted to contact the contacting portion of the arm on the rockshaft, and means operated by the rotation of the fountain-roll whereby the two contacting portions are kept in contact at predetermined intervals, substantially as described.

7. In a printing-press, the combination of a rock-shaft carrying a ductor-roll, an arm carried by said rock-shaft terminating in a contacting portion, a fountain-roll. having a rotary motion, alever pivoted at one end, a second lever also pivoted at one end and resting on a portion of the first-mentioned lever and terminating in a portion adapted to contact the contacting arm of the rock-shaft, means operated by the rotation of the fountain-roll whereby the two contacting portions are kept in contact at predetermined intervals, and adjustable means also operated by the rotation of the fountain-roll whereby the period or length of time of contact is regulated, substantially as described.

8. In a printing-press, the combination of a fountain-roll, means for rotating the fountainroll, a rock-shaft carrying a ductor-roll, an arm carried by the rock-shaft terminating in a contacting portion, a friction-roller carried tion of the first lever and terminating in a;

portion adapted to contact the contacting portion on the arm of the rock-shaft thereby regulating the period or length of time of contact or dwell of the ductor-roll against the fountain-roll, and cooperative means formed between the two levers whereby the relative position of thesecond lever with regard to the arm on the rock-shaft with which it contacts may be varied, substantially as de scribed.

9. In a printing-press, the combination of an ink-distributing cylinder slidably mounted adjacent to the form-inking rolls and adapted adjacent to the form-inking rolls and adapted to supply the latter with ink, means for im' parting a predetermined number of revolutions to the cylinder in a given space of time, means for imparting a less, but variably-predetermined, number of endwise vibrations to the cylinder in the same space of time, and means for varying the number of vibrations of the cylinder relative to the number of revolutions, comprising a rotatable cam slidably mounted on a stud in the framework, a gear carried by said cam, a gear carried on the shaft of the cylinder meshing therewith and rotating the cam, a stationary friction-roller mounted in the framework adapted to coact with the cam to vibrate the same as it revolves, and cooperative means formed between the cam and the cylinder whereby the vibration of the cam is imparted to the cylinder, substantially as described.

11. In a printing-press, the combination of an ink-distributing cylinder slidably mounted adjacent to the form-inking rolls and adapted to supply the latter with ink, means for rotating the cylinder, a rotatable cam slidably mounted, means for rotating the cam-from the cylinder, means whereby the rotationof the cam causes its vibration, and means for imparting the vibrations of the cam to the cylinder, substantially as described.

12. In a printing-press, the combination of a plate-cylinder, anink-distributing surface on said cylinder, a set of form-inking rolls adapted to contact the form carried by said cylinder and adapted also to contact the inkdistributing surface, and an additional set of form-inking rolls adapted to contact the form after each impression prior to its contact with the first-mentioned set of inking-rolls, and

adapted further not to contact the ink-dis tributing surface on the cylinder, substantially as described.

13. In a printing-press, the combination of a plate-cylinder, an ink-distributing surface on said cylinder, a set'of form-inking rolls adapted to contact the form carried on the cylinder and adapted also to contact the inkdistributing surface, and means for contacting the form on the cylinder after each impression and prior to its contact with the form inking rolls for the purpose of removing the paper fiber or dust on said form, and adapted further not to contact the ink-distributing surface on the cylinder so as not to transfer the said dust or fiber to the form-inking rolls substantially as described.

14. In a printing-press, the combination of a plate-cylinder, a circumferential gear carried by the cylinder, a cam mounted on the shaft. of the said cylinder, a pair of arms pivoted on a rock-shaft, a plurality of form and distributing rolls carried by said arms, atrain of gears driving the distributing-rolls contacting with the form-rolls, an intermediate gear on the rock-shaft in constant mesh with the circumferential gear on the cylinder and the train of gears driving the distributingrolls, a second rock-shaft mounted below the arms pivoted to the first rock-shaft, a pair of arms carrying a friction-roll pivoted to two arms on the second rock-shaft, and a lever mounted on the second rock-shaft carrying a friction-roll cooperating with the cam on the shaft of the cylinder, for the purposes as set forth, substantiallyas described.

15. In a printing-press, the combination of a rock-shaft carrying a ductor-roll, an arm carried by said rock-shaft terminating in a contacting portion, a lever pivoted at one end, a second lever also pivoted at one end and resting ona portion of the first-mentioned lever and terminating in a portion adapted to contact the contacting portion of the arm on the rock-shaft, and means whereby the two contacting portions are kept in contact at predetermined intervals, substantially as described.

16. In a printing-press, the combination of arock-shaft carrying a ductor-roll, an arm carried by said rock-shaft terminating in a contacting portion, a lever pivoted at one end, a'second lever also pivoted at one end and resting on a portion of the first-mentioned lever and terminating inia portion adapted to contact the contacting arm of the rock-shaft, means whereby the 'two contacting portions are kept in contact at predetermined intervals, and adjustable means whereby the period or length of time of contact is regulated, substantially as described, 7

17. In a printing-press, the combination of a distributing-cylinder, a fountain whose roll has a rotary motion, a ductor-roll mounted on arms on a rock-shaft and caused to'vibrate in contact with the distributing-cylinderand the fountain-roll, an arm on the rock-shaft Whose end terminates in a contacting portion, a lever pivoted at one end and contacting with a end the other end contacting with the contacte ing. portion of the arm on the rock-shaft, and York and State of New York, this 30th day an ad glsting ntakeans for IBglfilfitigg tfimfidisof January, A. D. 1901. V tance etween e two arms W ere y t e ime of contact between the fountain-roll and the WALTER SCOTT 5 'ductorroll canbe regulated, substantially as Witnesses:

described. WILLIAM R. DORMAN,

Signed at New York, in the county of New AXELEN V. BEEKEN. 

